Great info Kirk. Thank you. I have to admit, i thought PSE was Porsche Stock Exhaust.
On the MAXSPEED eBay auction they say
"IMO the best exhaust i've heard for a boxster, deep tone from 0 to 2800 RPM very little resonance felt in cabin from 0 to 2800 RPM when I say very little it means there is some between 0 to 2800 RPM but again very little hardly noticeable and easy to get used to nothing to drive you crazy, in other words nothing annoying." If it's anything like my GHL, it's annoying. I don't want to spend $1500 for the headers & muffler to find out it's the same.